ActiveXperts Network Monitor 

ActiveXperts Network Monitor is the leading solution for monitoring all aspects of your LAN and WAN servers, workstations and devices. ActiveXperts Network Monitor supports Windows platforms, UNIX platforms, Linux platforms, and Novell platforms.
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Atelier Web SMS Pro 

Very comphreensive software for sending different types of SMS messages from your computer to GSM cellular phones everywhere in the World.
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PageGate 

Messaging server software sends: SMS text messages to: pagers, mobile phones. Messages can be accepted from: networked computers, email, web pages, commandline, text files, serial ports, modems. Messages can be sent via Web or modem.
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SmartSMS 

SmartSMS enables you to send Picture Messages, Caller Group Graphic, Operator Logos, Ringtones, EMS messages and FlashSMS direct from your PC to a GSM phone. Send using modem or Phone (connected through cable/IR/bluetooth) or Internet.
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Network Spy 

An Ethernet packet capture program. It decodes and analyzes IP packets on your LAN. It also lets you measure network load, resolve IP conflicts and build an ARP table. A powerful rules-based filtering engine enables you to perform intrusion detection
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